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  • Title: Serotonin immunoreactivity in the circumesophageal nervous system of Hermissenda crassicornis.
    Author: Land PW, Crow T.
    Journal: Neurosci Lett; 1985 Dec 04; 62(2):199-205. PubMed ID: 2418387.
    Abstract:
    Immunohistochemical techniques were used to examine the distribution of serotonin-immunoreactive (5-HT-IR) neurons and processes in the circumesophageal nervous system of Hermissenda. Both the pedal and the cerebropleural ganglia contained immunoreactive neuronal somata, with the majority occurring in the pedal ganglia. Immunoreactive fibers and varicosities were identified in portions of the central neuropil, where we noted a consistent and specific relationship between 5-HT-IR axons, the optic nerve and the synaptic region in the neuropil near the photoreceptor terminals.
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